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3 years ago

In the following figure, select whether the green and red graphics are functions or not

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

5 0

Answer:

C. green is not a function, red is a function

Step-by-step explanation:

A curve does not describe a functional relationship if a vertical line crosses it in more than one place. Clearly the y-axis crosses the green curve in 2 places, so it is NOT a function.

There is a very steep section at x=10 on the red curve. It we assume it is simply "very steep" and not "vertical", then the red curve IS a function. If you assume that short section is vertical, then the red curve is not a function, either. My choice is to go with "very steep," not "vertical."

My conclusion is that green is not a function; red is a function.

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2^x-1=128<br><br><br> show work pls! thank u :)

hichkok12 [17]

Hello from MrBillDoesMath!

Answer:

Take you pick below! (either x 8 or x = 7.01, approx, depending how the question is interpreted)

Discussion:

Interpretation 1

If the question is 2^(x -1) = 128, then as 2^7 = 128,

x-1 = 7 so x = 8

Interpretation 2

If the question is (2^x -1) = 128, then..

2^x = 128 + 1 = 129 =>

log(2^x) = log(129) =>

xlog(2) = log(129) =>

x = log (129) / log2 = 7.01

Regards,

MrB

4 0

3 years ago

Solve 5x + 14 = k for x

densk [106]

Answer:

$x = \frac{k - 14}{5} \\$

Step-by-step explanation:

$5x + 14 = k \\ 5x = k - 14 \\ x = \frac{k - 14}{5} \\$

4 0

3 years ago

HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10PTS PLUS BRAINLEIST!!!!!!!!!!!!!! THIS!!!!! IS!!!!! URGENT!!!!!!

Shtirlitz [24]

1.
$4 \pm \sqrt{49} = 4 \pm 7 =$ 4 + 7 or 4 - 7 = 11 or -3

2.
pi is a real number. It is not imaginary or complex, so it definitely belongs to the set of real numbers.
pi is not a whole number or a rational number. It cannot be written as a fraction of integers. pi is irrational.
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4 years ago

Tiffany's allowance is reduced $1.25 every time she forgets to clean her room. If she forgets to clean her room 7 times this mon

Katen [24]

Answer:

8.75

Step-by-step explanation:

1.25(7)= 8.75

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3 years ago

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What is the value of "c" in the quadratic equation 3x 2 + 5x + 7 = 0?

Nutka1998 [239]

Answer:

Step-by-step explanation:

The quadratic equation looks like:

ax + by + c = 0

"c" is the variable that stands for the "constant", or the number that does not have an extra variable attached, and so is "unchanging". In this case, your answer is 7, which is the constant of the equation. Once defined, the number cannot be changed.

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3 years ago

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